NPT NATIONAL PIPE TAPER PLUG THREAD GAGES:
These gages have a flat ground on them to indicate the proper depth for threading.

We are an authorized distributor of Greenfield Industries thread gages.GF gages often keeps hard to find gages on their shelf and also provides custom specials for LSC.We can quote your specialty gage needs, just send us an email at admin@lakeshorecarbide.com.